THE FOUNDATIONS OF ZOOLOGY

A COURSE OF LECTURES

DELIVERED AT COLUMBIA UNIVERSITY

ON THE PRINCIPLES OF SCIENCE

AS ILLUSTRATED BY ZOÖLOGY

Columbia University Biological Series

EDITED BY

HENRY FAIRFIELD OSBORN

AND

EDMUND B. WILSON

1. FROM THE GREEKS TO DARWIN

By Henry Fairfield Osborn

II. AMPHIOXUS AND THE ANCESTRY OF THE VERTEBRATES By Arthur Willey

III. FISHES, LIVING AND FOSSIL. An Introductory Study

By Bashford Dean

IV. THE CELL IN DEVELOPMENT AND INHERITANCE
By Edmund B. Wilson

V. THE FOUNDATIONS OF ZOOLOGY

By W. K. Brooks

VI. THE PROTOZOA

By Gary N. Calkins

VII. REGENERATION

By T. H. Morgan

VIII. THE DYNAMICS OF LIVING MATTER

By Jacques Loeb

IX. ANTS: THEIR STRUCTURE, DEVELOPMENT AND BEHAVIOR

By W. M. Wheeler

X. BEHAVIOR OF THE LOWER ORGANISMS.

By H. S. Jennings

COLUMBIA UNIVERSITY PRESS
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FOUNDATIONS OF ZOOLOGY*

BY

WILLIAM KEITH BROOKS, PH.D., LL.D.

PROFESSOR OF ZOOLOGY IN THE JOHNS HOPKINS UNIVERSITY